Roland Turner


Yahi Haze Mapping
about | contact

The Ones Who Walk Away from Facebook

TL;DR: I have started a long-term project to substantially reduce my use of Facebook and increase my engagement with friends elsewhere, rather than outright quitting. I am interested to know where others are with this. They leave Omelas, they walk ahead into the darkness, and they do not come back. The place they go towards is a place even less imaginable to most of us than the city of happiness. I cannot describe it at... (more)

Pan-privi-what now?

From time to time over the last several years, ideas have come to mind for blog posts on privacy, freedom, and security, particularly on the Internet. I have therefore been meaning for a while to start a blog on these topics. Recent events have finally given this project impetus enough to commence. The name Panprivicon is a play on Bentham's panopticon and concisely expresses my desire to live in a world where each of us... (more)

PDFtk awesomeness for scanning

Our office scanner has been cunningly designed so as to have an automatic document feeder, but to only be capable of scanning the upward-facing side of each page! Here are two PDFtk commands to help deal with this. Simple concatention: pdftk in*pdf cat output out.pdf Collation with the backs in reverse order, because when the stack is turned over to scan the backs, it scans the last page first: pdftk A=fronts.pdf B=backs.pdf shuffle A Bend-1... (more)

Word, "Changing the number format for this list updates the style"

None of the helpful guidance for this message from Microsoft Word pointed out that the underlying problem is that "Automatic Update" is turned on on various of the style elements in the template, so e.g. changing a bulleted list to a numeric list changes all of the lists in the entire document, but also numbering mysteriously fails to reset. Quite why anyone would do such a thing is a mystery to me, but the fix... (more)

Android Player and File Names with Colons or Digits in them

I created some MP3 files containing a talking clock to use in my phone's morning alarms and called them things like 6:30.mp3. When I tried to add them as alarm tones, I saw: Sorry, the player does not support this type of audio file. As they were only a handful of small files, freshly generated with LAME, and transferred via Dropbox, file corruption seemed rather unlikely. A little searching turned up a comment about filenames... (more)

First Gpredict Session

For the first time since July I managed to get out and operate last night. Sadly I made no successful contacts: During the 20:56 - 21:08 pass of CUTE-1.7 + APD II (21° peak) my TH-F7E radio went into a mode that I've never seen before. By the time I'd worked out how to reset it without wiping its memory ("Fn+Pwr" for future reference...) the pass was over. The other two passes that occurred while... (more)

Crash-Only Software at Papers We Love Singapore

I gave an overview of Candea and Fox's Crash-Only Software at Papers We Love Singapore last night. The slides are a little spartan. (more)

Brexit, Interrupted (UPDATED - This approach won't work.)

Update: 2016-11-06 Writing up an idea in detail can be an effective way to share it, but also to more quickly discover any errors in it by giving others the opportunity to scrutinise it. In this case, a significant error in my understanding of the role of the Supreme Court has been pointed out to me, large enough that the approach described below clearly won't work. The only judicial function that the House of Lords... (more)

Simplest Possible Systemd Service

(Because almost every search result for this provides a lengthy discussion instead of a simple example...) In /etc/systemd/system/sleep-92951829.service : [Unit] Description=Sleep Demo [Service] ExecStart=/bin/sleep 92951829 [Install] WantedBy=multi-user.target $ sudo chown root.root /etc/systemd/system/sleep-92951829.service $ sudo chmod 644 /etc/systemd/system/sleep-92951829.service $ sudo systemctl enable sleep-92951829 $ sudo systemctl start sleep-92951829 $ ps -fC sleep (more)